# Date: Mar 21, 2025

# These are JEPS replication materials for:
Invitation Letters Increase Response Rates in Elite Surveys: Evidence From Germany and the United Kingdom

# Authors
- Nathalie Giger
- Miguel M. Pereira

# Codebooks
A codebook with descriptions of the variables in each dataset can be found in these files:
- codebook_eplo_pool.txt -- codebook for dataset of politicians invited to the survey
- codebook_eplo_letters.text --codebook for dataset of survey respondents


# Data files and R code
All data used in the study were originally collected by the authors and is available at Giger and Pereira (2025). The following files will reproduce the analyses reported in the paper and Supporting Information:
- eplo_pool.csv - a csv file containing the dataset of the population of local politicians invited to the survey. 
- eplo_respondents.csv - a csv containing survey responses for politicians in Germany and the UK. Contact information of data creators at the end of the readme file.
- letters_replication.R - replication code

# Working directory 
To replicate the analyses, set your working directory to the replication folder that contains the datasets.

# Packages
stargazer (version 5.2.3)
ggplot2 (version 3.4.2)

# Software details
- RStudio: Version 2024.04.0
- Computer OS: Macbook OS Sonoma (14.5)
- Computer Memory (RAM) 64 GB
- Computer Chip Apple M1 Max

# Contact
Any questions should be directed to Miguel Pereira at M.M.Pereira@lse.ac.uk